Machine for roughing shoe-soles, &amp;c.



F. J. NASH.

MACHINE FOR ROUGHING SHOE soLEs; (ice. I

APPLIOATION FILED MAY 31, 1 906. I

978,777. Patented De.13,1910.

4 SHEETS-SHEET 1.

l V/TNESSESi J P. J. NASH.

MACHINE FOR ROUGHING SHOE SOLES, 6w.

' APPLICATION FILED MAY 31. 1906.

' Patented De0.13,1910.

4 8HEETS-BHEET 2.

M 7' NE 55551 #W @1351. m iJ F. J. NASH. MACHINE FOR ROUGHING SHOESOLES, 6w. APPLICATION FILED MAYM, 1906.

78,777. 7 PatentedDec.13,1910.

4 SHEET8-SHEET a.

P. J. NASH.

MACHINE FOR ROUGHING SHOESOLES, 6w. -APPLIUATION FILED MAY 31,190'6.

978,777; Patented Dec. 13, 1910.

4 SHEETS-SHEET 4.

mz- M UNITED STATES PATENT OFFICE.

FREDERICK J. NASH, OF SOMERVILLE, MASSACHUSETTS, ASSIGNOR TO UNITED SHOEMACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

MACHINE FOB ROUGI-IING SHOE-SOLES, 8w.

Specification of Letters Patent.

Patented Dec. 13, 1910.

Application filed May 31, 1906. Serial No. 319,617.

To all whom "it may concern:

Be it known that I, FRnDnRIoK J. NASH, a citizen of the United States,residing at Somerville, in the county of Middlesex and Commonwealth ofMassachusetts, have invented certain Improvements in Machines forRoughing Shoe-Soles, &c., of which the following description, inconnection with the accompanying drawings, is a specification, likereference characters on the drawings indicating like parts in theseveral figures.

This invention relates to machines for roughing the surface of leather,particu larly the grain surface of soles for boots and shoes.

The object of the invention is to provide a machine which will cut awaythe smooth shiny surface on the grain side of soles, etc., and leave asurface which is slightly rough. By this treatment, a suitable surfaceis provided to which cement may be applied in order that the soles maybe cemented to the insoles or filling in shoes. When thematerialoperated upon is an insole, a different advantage results fromthe removal of the smooth shiny surface. The surface con tains tannicacid which is drawn from the leather by the heat and perspiration fromthe foot causing cracking of the leather and giving a burning sensationto the foot. By removing this surface from insoles,-these disadvantagesare avoided. In addition to the above mentioned advantages, the leatheris rendered more flexible.

This invention is embodied in a machine which has a rotary cutter forremoving the smooth surface from the stock and means to feed the stockand hold it in contact with the periphery of said cutter The cutter isprovided with a plurality of cutting edges extending lengthwise orparallel to the axis of rotation, and at right angles to the directionof travel of the stock. The cutter is rotated with a peripheral speedmuch greater than the speed at which the stock is fed. In this mannerthe surface of the stock is removed in the form of very minute chips,and the stock is left with a uniform velvety appearance with the fibersslightly raised.

In the preferred form of construction of the machine, a table issupported over the cutter, and this table has an opening for theperiphery of the cutter and adjustable plates for changing the Width ofthe opening. The surface of the table along which the stock is fed issubstantially tangential to the periphery of the cutter, and the stockis thus supported in position to have its surface subjected to theaction of said cutter without cutting into the body of the stock. Thetable is preferably carried by a head which is pivoted to the frame sothat it may be swung back to expose the cutter.

The cutter is mounted in a movable bearing at one end so that it may bewithdrawn endwise from the machine in order to remove it for sharpeningor replacing with a new cutter. The head carries a plurality of rollssuitably spaced from the table. As disclosed in this particularembodiment, there are three of these rolls, the middle one being locateddirectly over the cutter and acting to hold the stock in operativerelation to the cutter, and the other two rolls acting as feed rolls.The two outer rolls are positively driven while the middle roll may bepositively driven so as to act as a feed roll also or it may be mountedso as to act as a presser roll only and be turned merely by contact withthe stock which is being fed along the table. The feed rolls and thepresser roll are adjustably mounted in the head so that they may beadjusted with respect to the table and the cutter, and means is providedfor putting the rolls into parallelism relatively to the cutter. Thehead is adjustably supported in order to vary the position of the tablewith respect to the cutter. In this way the distance which the cutterprojects through the opening in the table may be varied, and the amountof material removed from the face of the stock controlled. Thisadjustment also provides for compensating for the wear and the grindingaway of the cutting edges of the rotary cutter.

These and other features of the invention, including certain details ofconstruction and combination of parts, will be set forth in thefollowing description and pointed out in the claims.

Figure 1 is a front elevation of the machine; Fig. 2 is a side elevationof the righthand side; Fig. 3 is a side elevation of the left-hand side;Fig. 4: is a vertical transverse section; Figs. 5 and 6 are detail viewsillustrating a modification.

The frame 2 is provided with hearings to support a driving shaft 4 onwhich are order to regulate the size of the opening.

mounted fast and loose pulleys 6 and 8 operated from any suitable sourceof power, The shaft -l carries a large pulley 10 connected by a belt 12to a small pulley 16 on the cutter shaft 18 carrying the cutter 20 atthe upper part of the frame. The frame carries a casing 22 which partlysurrounds the cutter; also a fixed bearing 24 and a movable bearing 26for supporting the cutter shaft. The movable bearing has a flange 28resting upon the frame and a portion 29 extending through a slot in theframe, which portion is screw-threaded to receive a screw-threaded rod30 operated by a hand wheel 32. By turning this hand wheel in the properdirection, the bearing may be clamped in place by the engagement of theenlarged portion with the top portion of the frame, or loosened so as topermit the cutter to be drawn endwise from the machine. The cutter isprovided with a plurality of longitudinally extending cutting edges 34separated from each other by the grooves 36. The shaft 4 carries apulley 38 connected by. a belt #10 to a pulley 41 on a shaft 42supported in brackets 43 secured to the frame. The shaft 42 carries afan 41% which rotates in a casing 46 located below the cutter to whichthe air flue 48 leads, while the fine 50 leads from the rear of thecasing .for the discharge of material cut from the stock. A small pulley52 is mounted on the shaft 4 and connected by a belt 54 to a largepulley 56 on a shaft 58 mounted in projections 60 extending upwardlyfrom the frame.

The numeral 62 designates a supporting structure herein referred to as ahead, and which is mounted on the shaft 58 so as to turn thereon, sothat the head may be swung back out of operative position. It may besupported in this position by a bar 6 1 piv oted to the lower portion ofthe head. The var 61- is longer than the normal distance between itspivot and the top of the frame and when the machine is in operationoccupies an inclined position as shown in Fig. 2. hen the head 62 isturned upon the shaft 58, which constitutes a pivot, the bar 6 swingsinto a vertical position and serves as a stop to hold the head inelevated position. hen the bar is moved out of vertical position, thehead may be returned into operative position.

The head carries a table 66 having an opening 68 through which theperiphery of the cutter projects slightly when the head is inoperativeposition. At each side of this opening are plates 70 movable toward andfrom the cutter by means of screws 7 2 which engage screw-threads in thetable and which are provided with disk portions 74 fitting in grooves inthe plates, said screws being turned by means of the milled heads 76, in

The head is supported in operative position by a short adjusting rod 78screw-threaded at one end into the front lower side of the table, theother end of the rod resting upon the top portion of the frame. The rodprovided with a milled portion 80. by means of which said rod may beturned for raising or lowering the front end of the table.

Extending upwardly from the table are the posts 82 which carry the yokes85 in which are mounted the bearings 86 for the feed rolls 88 and 90 andthe presser roll 92. The bearings 86 are held down upon the stockyieldingly by the springs 94 the tension of which may be regulated bythe screws 96 as shown in Fig. 4. The yoltes are pro vided with lugs 98which rest upon springs 100 held between said lugs and lugs 102 on thetable. The upper ends of the yokes are made in the shape of wedges 10-1which engage similarly shaped wedges 106 formed on the ends of the bar108 as shown in Fig. 1. This bar is arranged to be moved longitudinallybetween the yokes and a cap plate 110 which spans the space between theposts 82 and which is securely bolted to the same. The bar is movedlongitudinally by a screw bolt 112 mounted to rotate withoutlongitudinal movement in a flange of the cap plate 110, said screw bolthaving threaded engage ment with a lug ill on the bar. A hand wheel 116is secured to the screw bolt for turning it in one direction or theother whereby the bar 108 is moved to the right or to the left forforcing the yokes 8% down or permitting them to be raised by the springs100. The left-hand end of the sliding bar may be adjusted vertically forthe purpose of bringing the feed rolls and the presser roll intoparallel relation with respect to the cutter. This is accomplished bymeans of the set screw 118 mounted in the cap plate and bearing on aplate 120 which rests on the left-hand end of the sliding bar. Byturning this set screw in one direction or the other, this end of thebar may be depressed or permitted to rise under the influence of thesprings 100.

For the purpose of adjusting the feed rolls and presser roll accordingto the thickness of the stock which it is desired to operate upon, apointer 124- is pivoted to the cap plate at 126 and the lower end isforked to engage a block 128 pivoted to the bar 108. The upper end ofthe pointer moves over a scale 130 to indicate the proper adjustment fordifferent thicknesses of stock.

The shaft 58 previously referred to is provided with a pinion 132meshing with a large gear 134: on the shaft 136 of the rear feed roller.This shaft is provided with a gear 138 which meshes with an intermediategear 140 on a short shaft 1.1-2. The gear 1-10 meshes with a gear 1% onthe shaft of the front feed roller, while a gear 146 on the shaft 142meshes with a gear 148 on the shaft 150 of the middle or presser roll92. It will thus be seen that the feed rolls and the presser roll areall turned in the same direction by means of this train of gearingoperated from the shaft 58. In this form of the invention the presserroll is positively driven and acts as a feed roll also. The three rollsare roughened in any suitable manner in order to feed the stock withoutslipping. A gear guard 152 extending over the train of gearing issecured to the post 82, while a guard 154 extends across the table infront of the feed roll 88 to prevent the hands of the operator beingdrawn thereunder.

In the form of invention illustrated in Figs. 5 and 6 the presser roll92 instead of being positively driven is turned merely by contact withthe stock passing beneath it. For this purpose the gears 146 and 148 aredispensed with and the feed rolls turned by means of the gears 138 and144 and intermediate gear 140. In this modification the bearings of thethree rolls are separate instead of being made in one piece. Thispermits the three rolls to move vertically inde pendently of each other.The bearings of the feed rolls are held yieldingly by the leaf springs156 controlled by the adjusting screws 158 while the bearings of thepresser roll are held yieldingly by the springs 94. The three rolls arethus yieldingly mounted at each of their ends independently of eachother. By mounting the rolls in this manner the stock is held down whenit is not uniform in thickness so that the cutter will reach the thinplaces.

The operation of this machine will be readily understood from theforegoing descript-ion.

Upon connecting the shaft 4 with any suitable source of power, thecutter 20 is rotated at a high rate of speed in the direction indicatedby the arrow in Fig. 4 while the feed rolls and the presser roll in themain form of the invention are rotated at a much slower speed in theopposite direction. Upon placing the stock a upon the table so that itis engaged by the front feed roll, it is carried along the table betweenthe cutter and the presser roll. The smooth shiny surface of the leatherwhich is downward is cut away in the form of very small chips bysuccessive attacks of the cutting edges 34. These chips are drawn intothe flue 48 by the fan and discharged through the flue 50. By turningthe hand wheel 116, the position of the yokes 84 may be changed, and thefeed rolls and presser roll thus adjusted with respect to the cutter,the extent of the adj ustment being indicated by the pointer 124 on thescale 130. By turning the set screw 118, the rolls may be brought intoparallel relation with respect to the cutter. By turning the screws 7 2the plates are moved and the width of the opening 68 changed. By turningthe rod 78, the front end of the table may be moved up and down and theextent which the periphery of the cutter projects through the openingregulated. This adjustment also makes provision for compensating for thewear of the cutting edges. Whenever it is desired to remove the rotarycutter, the head is turned back and the movable bearing loosened. Thishearing may then be moved toward the left and the cutter removed bypulling it lengthwise in this direction.

lVhile in the above description, a complete machine has been describedin detail in order to fully set forth the preferred manner of applyingthe invention, it will be understood that various changes may be made inarrangement and in details without departing from the spirit of theinvention.

Having described my invention, what I claim as new and desire to secureby Letters Patent of the'United States is 1. In a machine of the classdescribed, the combination with a rotary cutter, of a table along whichthe stock is fed, feed rolls, and a presser roll for holding the stockin operative relation with said cutter together with means for drivingthe two feed rolls independently of said presser roll.

2. In a machine of the class described, the combination with a rotarycutter, of a table along which the stock is fed, feed rolls, and apresser roll for holding the stock in operative relation with saidcutter, the said feed rolls and presser roll being yieldingly mounted ateach of their ends independently of each other.

3. In a machine of the class described, the

combination with a rotary cutter, of a table along which the stock isfed, feed rolls, a presser roll for holding the stock in operativerelation with said cutter, and means under the control of the operatorfor adjusting said feed rolls and presser roll with respect to saidcutter.

4. In a machine of the class described, the combination with a rotarycutter, of a table along which the stock is fed, feed rolls, a presserroll for holding the stock in operative relation with said cutter, andmeans for adjusting said feed rolls and presser roll into parallelrelation with respect to said cutter.

5. In a machine of the class described, the combination with a rotarycutter, of a table along which the stock is fed, feed rolls, a presserroll for holding the stock in operative relation with said cutter, meansfor putting said feed rolls and presser roll into parallel relation withrespect to said cutter, and means for adjusting them while in thisposition with respect to said cutter.

6. In a machine of the class described, the

T. In a machine of the class described, the

combination with a rotary cutter, of a table along which the stock isfed, feed rolls, a

presser roll for holding the stock in opera- 1 tive relation with saidcutter, and means for ad usting toward and from the cutter one end ofsaid feed and presser rolls independ ently of the other end.

S. In a machine of the class described, the combination with a rotarycutter, of a table along which the stock is fed, feed rolls, a presserroller for holding the stock in opera tive relation with said cutter,and mech. nism under the control of the operator for simultaneouslyadjusting the ends of said feed and presser rolls toward and from thecutter having provision for visually indicating the proper adjustmentfor different thicknesses of stock.

9. In a machine of the class described, the combination with a rotarycutter, of a table along which the stock is fed, feed rolls, a presserroll for holding the stock in operative relation with said cutter andmeans whereby said feed rolls and presser roll may be brought intoparallel relation with said cutter by adjustment of a single member.

10. In a machine of the class described, the combination with a rotarycutter having longitudinally extending cutting edges, of a headpivotally mounted whereby it may be swung out of operative relation tosaid cutter, a table carried by said head along which the stock is fed,feed rolls and a presser roll for holding the stock in operativerelation with said cutter, and means carried by the head for yieldinglysupporting the said feed rolls and presser roll at each of their ends.independently of each other.

11. In a machine of the class described, the combination with a tablehaving an opening in its work supporting surface, of a rotary cutterarranged to project through said opening and mounted upon ashaftextending substantially parallel with said table, a stationary bearingfor one end of the shaft and a longitudinally movable bearing for theother end of the shaft whereby the cutter may be removed from operativeposition, in the direction of its length.

12. A machine of the class described, having in combination, a rotarycutter, a table having an opening intermediate its ends for theperiphery of the cutter, plates mounted on said table on opposite sidesof said opening having work supporting faces substantially tangential tothe periphery of said cutter, the said plates being arranged foradjustment toward and from each other, and means for feeding the stockalong said plates.

13. A machine of the class described having, in combination, a rotarycutter, a worksupporting table provided with an opening through whichthe periphery of the cutter extends, means for feeding the work, andmeans for varying the area of the work which is exposed to the action ofthe cutter at any given instant.

14:. A machine of the class described having, in combination, a cuttingmember and means for feeding work thereto. said feeding means comprisinga feed roll, a bearing for said roll, a support in which said bearing isslidable, means for adjusting said bearing with respect to said support,springs by which said support is carried, and means for adjusting saidsupport.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

FREDERICK J. NASH.

\Vitnesses JOHN H. RUOKMAN, ARTHUR L. RUssELL.

